Supporting IPv6 on a Linux Server Node

This article provides a technical tutorial on setting up IPv6 on a Linux server and connecting it to the IPv6 Internet.

IPv6 Binaries and Tools

Once the kernel supports IPv6, you need to install some tools
to test your setup and to use IPv6 transport with other systems.
First, you need the basic network utilities to support IPv6 to be
able to configure your interface, in addition to some other IP
utilities such as ping6, telnet6, etc., and to be able to do some
basic IPv6 testing.

There are three packages that provide these utilities:
net-tools, iputils and the NetKit utilities. The must-have packages
are the first two; NetKit is optional. In addition, if you want to
have the ability to debug potential IPv6 network problems that may
arise, you need to have support for IPv6 in tcpdump and libpcap. In
the following sections, we cover the installation of all the
above-mentioned packages.

net-tools

net-tools is a collection of
programs to control Linux's networking, which includes commands
such as arp, hostname (domainname, dnsdomainname, nisdomainname),
ifconfig, ipmaddr, iptunnel, netstat, rarp, route and plipconfig.
This package is available for download from
www.tazenda.demon.co.uk/phil/net-tools.

To install the package on your system first download the
packages directly into /usr/src. Then enter these commands
separately:

The binaries will be installed in /sbin and /bin, and you can start
using them assuming that you have rebooted into an IPv6-enabled
kernel.

iputils

This package includes the following tools: ping, ping6,
traceroute6, rdisc, clockdiff, tftpd, tracepath, tracepath6 and
arping. It may be that the installed IP utilities on your system do
not support IPv6. The first step is to check if the currently
installed version is IPv6-compliant by typing the following at the
command shell:

rpm -q --qf "%{NAME}-%{VERSION}\n" iputils

If the outcome is iputils-20000121 or newer, then you do not
need to perform the installation of the latest iputils package.
Otherwise, you need to follow these steps to install the utilities
on your system. First, download the package from
ftp.inr.ac.ru/ip-routing.
For our setup, we used iputils-ss001110.tar.gz. Next, untar the
package in /usr/src:

tar -xzf iputils-ss001110.tar.gz

Finally, compile iputils with make.

The package does not provide a make install. Therefore, you
are free to place the binaries in a directory of your choice.
However, you need to make sure that the old versions of the tools
you have do not conflict with the newer versions in your path. Save
the new binaries in /usr/local/iputils/bin/. The package provides
man pages for every tool. You also need to move the new man pages
into a directory that man searches; to check which directories are
in the man path, type manpath.

NetKit Utilities

These utilities are basic tools to work with and test your
new IPv6 configuration. NetKit includes the following tools: ping,
finger, telnet, rwho and their respective dæmons. These are
very useful utilities because we can compile them with IPv6
support. The package is available for download from
freshmeat.net/projects/netkit.
The version we tested was nkit-0.5.1.tar.gz.

Here are the steps you need to follow to install these
utilities on your Linux server. First, download the latest NetKit
package from the referenced web site. Then move the downloaded file
to /usr/src. Unpack the package with:

tar -xzf nkit-0.5.1.tar.gz

Next, run ./configure. Compile with
make clean and make, and copy
the binaries to /usr/local/bin:

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